Bio organic fertilizer production equipment Granular formula fertilizer - mixed fertilizer: mixed fertilizer is a kind of mixed fertilizer developed in the United States. According to the soil nutrient status in different regions where the fertilizer is sold, the fertilizer demand characteristics of crops and the target yield, the demand and proportion of different nutrients are calculated. After mixing with organic fertilizer production equipment, it is generally sent to the field for use without packaging or long-term stacking. Organic fertilizer production equipment has greatly improved the utilization rate of nutrients and production efficiency because it directly links the agrochemical service and production. Mixed fertilizer has become one of the most popular mixed fertilizer technologies. Blended fertilizer technology began to be studied and used in China in the 1980s. Due to its strict requirements for basic fertilizers, it currently accounts for a small proportion in China's formula fertilizers.
Basic requirements for organic fertilizer production equipment: the general requirements for basic fertilizer of mixed fertilizer are uniform particle size, low moisture content, good particle strength, and no caking during storage. Particles obtained by spray granulation, large crystals into tablets, and irregular particles obtained by crushing and screening can also be used, but must meet the requirements- Requirements. In addition, the most effective form of nutrient release of different fertilizers should also be considered. For example, some nitrogen fertilizers are generally easy to fall on water. Large particles can reduce the nitrogen dissolution rate, which is conducive to the absorption and utilization of crops. Some fertilizers with low solubility, such as steel slag phosphate fertilizer, phosphate rock powder, defluorinated phosphate fertilizer, calcium magnesium phosphate fertilizer, and precipitation phosphate fertilizer, need to be ground into fine powder with a certain particle size to effectively release insoluble nutrients.
Formula fertilizer for bio organic fertilizer production equipment, such as phosphate rock powder with fineness of 0.15 mm, has the best effect. If the particle size is larger or smaller, the fertilizer effect will be affected due to the small contact area with the soil or the fixation of the soil. Because these fertilizers are not suitable for granulation or exist in large particles, they cannot be used as the basic fertilizer for mixing fertilizers. According to American research, the suitable particle size range of nutrient granules for general mixed fertilizers is - 6~+18 meshes. The general nitrogen fertilizers that meet these requirements include urea, granular ammonium nitrate, second floor phosphate, granular double superphosphate, and potassium fertilizers include potassium sulfate and potassium chloride.